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Hypothetical fec decoder and signalling for decoding control

A decoder and signal technology, applied in the field of transmitters, can solve problems such as lost packets

Inactive Publication Date: 2011-10-12
DIGITAL FOUNTAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, media packets from one source block can be interleaved with packets from other source blocks before the media packets are forwarded to a multiplexer that multiplexes data and FEC data before transmitting on the channel them, which may lose some packets

Method used

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  • Hypothetical fec decoder and signalling for decoding control
  • Hypothetical fec decoder and signalling for decoding control
  • Hypothetical fec decoder and signalling for decoding control

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Embodiment Construction

[0040] This article describes an improved communication system. In this system, the transmitter uses a hypothetical decoder to estimate the performance of the decoder, and thus determines the decoder optimization parameters, which are then transmitted to the decoder along with the media stream and used by the decoder to optimize the performance of the media stream. Decode and play the media stream.

[0041] In a conventional "hypothetical FEC decoder" system, where forward error correction is used and the data stream is encoded at the transmitter, the data stream passes through the hypothetical FEC decoder so that the transmitter will know how to decode, e.g. A specific stream can be successfully decoded under the condition of minimum buffer time (min-buffer-time) and maximum buffer size (max-buffer-size). An example of such a hypothetical FEC decoder is specified in 3GPP TS 26.346, clause 8.2.2.11.

[0042] In operation, once a receiver accesses a new stream (e.g., starts l...

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Abstract

A communication system wherein a transmitter transmits a media stream to a receiver encoded using FEC, comprising at least one hypothetical FEC decoder at the transmitter for decoding the media stream encoded at the transmitter. The transmitter determines what optimization signals to provide the receiver given the outputs of the at least one hypothetical FEC decoder and signals to the receiver those optimization signals. The optimization signals might include slowdown of media consumption signals, indications of variable buffering parameters and / or indications of FEC and source data ordering.

Description

[0001] Cross References to Related Applications [0002] This disclosure may relate to the following commonly assigned applications / patents. [0003] This application claims priority to co-pending U.S. Provisional Patent Application No. 61 / 061.073, filed June 12, 2008, entitled "Hypothetical FEC Decoder and Early Decoding," which is hereby incorporated by reference for all purposes. incorporated herein as if fully set forth in this document. [0004] US Patent Application 11 / 226,919 (now US Patent 7,233,264) is also incorporated by reference. [0005] US Patent Application 11 / 423,391, entitled "Forward Error-Correcting (FEC) Coding and Streaming," is also incorporated by reference. [0006] The disclosures of each of these applications / patents are hereby incorporated by reference in their entirety for all purposes. technical field [0007] The present invention relates generally to media services, and in particular to transmitters that transmit streaming media and decoded s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/27
CPCH03M13/15H03M13/1515H03M13/2789H03M13/6508H04L1/0041H03M13/25H04N21/236
Inventor T·施托克哈默M·G·卢比
Owner DIGITAL FOUNTAIN
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